loader: Add scenarii around new visit with changes since last visit

In this scenario, a visit has already taken place for the origin. So, an existing snapshot exists.

But, this time, the PyPI project has changed and a new release has been uploaded.

The visit must then result in a new snapshot.

The snapshot shares the same history as prior visit.

Related swh-loader-core#421 (closed)

To be rebased and merged after olasd's diffs (done once).

Test Plan

make test

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Migrated from D416 (view on Phabricator)

Rebased on latest origin/master and add a scenario that captures the wrong behavior regarding the unpublishing release scenario

• tests: Make the data human readable
• tests: Remove unneeded instruction
• loader: Add scenario around new visit with changes since last visit
• loader: Add scenario for new visit with unpublished release

• tests: Add missing archive artifacts

mentioned in commit 5bd7dda3

Merge request was accepted

approved this merge request

Some references in the commit message have been migrated:

• T421 is now swh-loader-core#421 (closed)
• D416 is now !4 (closed)

Merge request was merged

closed